package com.lib.base.utils;

import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

/**
 * Md5工具类
 */
public class Md5Utils
{
    // md5加密算法
    public static String md5(String string)
    {
        byte[] hash;
        try
        {
            hash = MessageDigest.getInstance("MD5").digest(
                    string.getBytes("UTF-8"));
        } catch (NoSuchAlgorithmException e)
        {
            throw new RuntimeException("Huh, MD5 should be supported?", e);
        } catch (UnsupportedEncodingException e)
        {
            throw new RuntimeException("Huh, UTF-8 should be supported?", e);
        }

        StringBuilder hex = new StringBuilder(hash.length * 2);
        for (byte b : hash)
        {
            if ((b & 0xFF) < 0x10)
                hex.append("0");
            hex.append(Integer.toHexString(b & 0xFF));
        }
        return hex.toString();
    }
}
